(19)

(11)

EP 1 951 486 A2

(12)

(88) Date of publication A3: 22.11.2007 (43) Date of publication: 06.08.2008 Bulletin 2008/32 (21) Application number: 06802409.0 (22) Date of filing: 28.08.2006

(51) International Patent Classification (IPC):  B28B 1/00(2006.01) (86) International application number: PCT/US2006/033405 (87) International publication number: WO 2007/055776 (18.05.2007 Gazette 2007/20)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 07.11.2005 US 597049 P 12.04.2006 US 279461 (71) Applicants: THE VANGUARD COMPANY, LLC Raleigh NC 27612 (US) Sun, Jia-Lin Beijing 100083 (CN)	(72) Inventor: SUN, Jia-Lin Beijing 100083 (CN) (74) Representative: Wagner, Karl H. et al WAGNER & GEYER Patentanwälte Gewürzmühlstrasse 5 80538 München 80538 München (DE)